Coulomb and nuclear excitations of Zn-70 and Ni-68 at intermediate energy

S. Calinescu; O. Sorlin; Matea; F. Carstoiu; D. D. Dao; F. Nowacki; G. de Angelis; R. Astabatyan; S. Bagchi; C. Borcea; R. Borcea; L. Caceres; M. Ciemala; E. Clement; Z. Dombradi; S. Franchoo; A. Gottardo; S. Grevy; H. Guerin; M. N. Harakeh; I. M. Harca; O. Kamalou; M. Kmiecik; A. Krasznahorkay; M. Krzysiek; Kuti; A. Lepailleur; S. Lukyanov; A. Maj; Maslov; K. Mazurek; P. Morfouace; J. Mrazek; F. Negoita; M. Niikura; L. Olivier; Y. Penionzhkevich; L. Perrot; C. Petrone; Z. Podolyak; C. Rigollet; T. Roger; F. Rotaru; D. Sohler; M. Stanoiu; Stefan; L. Stuhl; J. C. Thomas; Z. Vajta; M. Vandebrouck; O. Wieland

doi:10.1103/PhysRevC.104.034318

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Coulomb and nuclear excitations of Zn-70 and Ni-68 at intermediate energy

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Coulomb and nuclear excitations of Zn-70 and Ni-68 at intermediate energy

S. Calinescu, O. Sorlin, Matea, F. Carstoiu, D. D. Dao, F. Nowacki, G. de Angelis, R. Astabatyan, S. Bagchi, C. Borcea, …

Physical review. C, Vol.104(3), 034318

23/09/2021

DOI: https://doi.org/10.1103/PhysRevC.104.034318

Abstract

Physical Sciences

Physics

Physics, Nuclear

Science & Technology

The reduced transition probabilities B(E2; 0(g.s.)(+) -> 2(1)(+), 2(2)(+)) in (70) Zn and the full B(E2; 0(g.s.)(+) -> 2(+)) strength up to S-n = 7.79 MeV in Ni-68 have been determined at the LISE/GANIL facility using the Coulomb-excitation technique at intermediate beam energy on a Pb-208 target. The gamma rays emitted in-flight were detected with an array of 46BaF(2) crystals. The angles of the deflected nuclei were determined in order to disentangle and extract the Coulomb and nuclear contributions to the excitation of the 2(+) states. The measured B(E2; 0(g.s.)(+) -> 2(1)(+)) of 1432(124) e(2) fm(4) for Zn-70 falls in the lower part of the published values which clustered either around 1600 or above 2000 e(2) fm(4), while the B(E2; 0(g.s.)(+) -> 2(1)(+)) of 53(7) e(2) fm(4) agrees very well with the two published values. The relatively low B(E2; 0(g.s.)(+) -> 2(1)(+)) of 301(38) e(2) fm(4) for Ni-68 agrees with previous studies and confirms a local magicity at Z = 28, N = 40. Combining the results of the low-energy spectra of Ni-68 and Zn-70 and their shell-model interpretations, it is interesting to notice that four different shapes (spherical, oblate, prolate, and triaxial) are present. Finally, a summed E2 strength of only about 150 e(2) fm(4) has been found experimentally at high excitation energy, likely due to proton excitations across the Z = 28 gap. The experimental distribution of this high-energy E2 excitation agrees with shell-model calculations, but its strength is about two times weaker.

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Title: Coulomb and nuclear excitations of Zn-70 and Ni-68 at intermediate energy
Creators: S. Calinescu - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
O. Sorlin - Institut National de Physique Nucléaire et de Physique des Particules
Matea - University of Paris-Saclay
F. Carstoiu - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
D. D. Dao - University of Strasbourg
F. Nowacki - University of Strasbourg
G. de Angelis - Ist Nazl Fis Nucl, Lab Nazl Legnaro, Legnaro, Italy
R. Astabatyan - JINR, FLNR, Dubna 141980, Moscow Region, Russia
S. Bagchi - University of Groningen
C. Borcea - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
R. Borcea - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
L. Caceres - Institut National de Physique Nucléaire et de Physique des Particules
M. Ciemala - Polish Acad Sci, Henryk Niewodniczaski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland
E. Clement - Institut National de Physique Nucléaire et de Physique des Particules
Z. Dombradi - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
S. Franchoo - University of Paris-Saclay
A. Gottardo - Ist Nazl Fis Nucl, Lab Nazl Legnaro, Legnaro, Italy
S. Grevy - University of Bordeaux
H. Guerin - University of Bordeaux
M. N. Harakeh - University of Groningen
I. M. Harca - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
O. Kamalou - Institut National de Physique Nucléaire et de Physique des Particules
M. Kmiecik - Polish Acad Sci, Henryk Niewodniczaski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland
A. Krasznahorkay - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
M. Krzysiek - Polish Acad Sci, Henryk Niewodniczaski Inst Nucl Phys, Ul Radzikowskiego 152, PL-31342 Krakow, Poland
Kuti - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
A. Lepailleur - Institut National de Physique Nucléaire et de Physique des Particules
S. Lukyanov - JINR, FLNR, Dubna 141980, Moscow Region, Russia
A. Maj - UL Research Institutes
Maslov - JINR, FLNR, Dubna 141980, Moscow Region, Russia
K. Mazurek - UL Research Institutes
P. Morfouace - University of Paris-Saclay
J. Mrazek - AS CR, Nucl Phys Inst, CZ-25068 Rez, Czech Republic
F. Negoita - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
M. Niikura - University of Paris-Saclay
L. Olivier - University of Paris-Saclay
Y. Penionzhkevich - JINR, FLNR, Dubna 141980, Moscow Region, Russia
L. Perrot - University of Paris-Saclay
C. Petrone - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
Z. Podolyak - University of Surrey
C. Rigollet - University of Groningen
T. Roger - Institut National de Physique Nucléaire et de Physique des Particules
F. Rotaru - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
D. Sohler - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
M. Stanoiu - Horia Hulubei Natl Inst Phys & Nucl Engn, POB MG 6, Bucharest 077125, Romania
Stefan - University of Paris-Saclay
L. Stuhl - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
J. C. Thomas - Institut National de Physique Nucléaire et de Physique des Particules
Z. Vajta - Inst Nucl Res Atomki, POB 51, H-4001 Debrecen, Hungary
M. Vandebrouck - University of Paris-Saclay
O. Wieland - Mylan
Publication Details: Physical review. C, Vol.104(3), 034318
Publisher: Amer Physical Soc
Number of pages: 10
Date published: 23/09/2021
Grant note: GA 654002 / ENSAR PN-II-RU-TE-2011-3-0051 / Romanian National Authority grant for Scientific Research, CNCS -UEFISCDI; Consiliul National al Cercetarii Stiintifice (CNCS); Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii (UEFISCDI) GINOP-2.3.315-2016-00034 / European Regional Development Fund; European Union (EU) K128947 / National Research, Development and Innovation Fund of Hungary
Identifiers: 99822517602346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Coulomb and nuclear excitations of Zn-70 and Ni-68 at intermediate energy

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